Discrete-time modeling and control of double dual boost converters with implicit current ripple cancellation over a wide operating range

Villarreal-Hernandez, Carlos A., Mayo-Maldonado, Jonathan Carlos, Escobar, Gerardo, Loranca-Coutino, Javier, Valdez-Resendiz, Jesus Elias and Rosas-Caro, Julio C. (2021) Discrete-time modeling and control of double dual boost converters with implicit current ripple cancellation over a wide operating range. IEEE Transactions on Industrial Electronics, 68 (7), 5966-5977, [9108403]. (doi:10.1109/TIE.2020.2996149).

Abstract

This article introduces discrete-time controllers for double dual boost converters, suitable for renewable energy applications. The proposed schemes are based on a current ripple mitigation technique, which enables an unconstrained input-to-output voltage converter gain. This is in contrast with classical interleaved topology implementations, where duty cycles are restricted (e.g., to 50%). A discrete-time small-signal controller is proposed for those applications that require nominal specifications. This control strategy is based on a novel linear difference system approach, whereas gain tuning is performed via numerical computation of linear matrix inequalities. In addition, a discrete-time large-signal controller is proposed for those applications that require trajectory tracking. The proposed controllers, their stability, performance, and ripple cancellation properties are validated via experimental results.

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Contributors

Author: Jonathan Carlos Mayo-Maldonado

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